JP2014199315A - Direction adjuster for projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a direction adjuster for a projector that enables a user standing on a floor to freely adjust the projection direction and angle of the projector fixed to a structure in the upper space such as a ceiling via a fixture and projecting a magnified image on a wall or a screen.SOLUTION: A direction adjuster 1 for a projector is fixed to an upper structure 27 in the upper space over a user 26 via a fixture 3 that enables a selective projection between a first screen 21 with its projection surface disposed vertically and a second screen 22 with its projection surface disposed horizontally. The direction adjuster 1 for a projector comprises: a first grip part 6 extending from a projector 2 in the projection direction of the projector 2; and a second grip part 7 extending from the projector 2 in the direction of the second screen 22 when the first grip part 6 extends in the direction of the first screen 21.

Description

  The present invention provides a projector that projects an enlarged image on a wall surface or a screen while the projector is fixed to an upper space structure such as a ceiling via a fixture, while the user is standing on the floor surface. The present invention relates to a projector direction adjuster that can arbitrarily adjust the angle.

  The projector horizontally installs an image on a screen (first screen) that is installed in a structure in a user's upper space such as a ceiling or a beam of a room and is vertically arranged on the wall surface of the room or on the near side of the wall surface. Enlarged projection is possible.

  Not only that, the projection direction of the projector is changed as appropriate, and for example, the projection direction of the projector is set separately to a horizontal screen (second screen) such as a table located directly under the projector, or to the vertical direction. It is also possible to project toward a screen (third screen), and a projector suspending tool having a biaxial hinge mechanism is generally used to perform such a projection change.

  This projector suspending device is composed of a fixture to an upper space structure such as a ceiling or a beam, and an adjustment mechanism that can adjust the projection direction of the projector via the fixture and the mounting portion of the projector main body. Is done.

  FIG. 9 is an exploded perspective view showing a conventional projector and its suspension device. As shown in FIG. 9, the hanging device 60 of the projector 2 includes a fixture 3 and a base portion 61.

  The fixture 3 includes a ceiling fixing plate 30 and a biaxial hinge 33 capable of adjusting the direction and angle. The fixing plate 30 is fixed to the ceiling by a fixing means of a screw 41, and the screw 42 is fixed. The biaxial hinge 33 is fixed by a fixing means. The base unit 5 for fixing the projector 2 with screws 44 is fixed to the biaxial hinge 33 with screws 43.

  The biaxial hinge 33 includes a mounting plate 33a, a first hinge 33b, a pair of second hinges 33c, a horizontal rotation shaft 33d, and a vertical rotation shaft 33e. The mounting plate 33a and the first hinge 33b are rotatable about the axis of the horizontal rotation shaft 33d (see the extension line L1 of the horizontal rotation shaft core) via the horizontal rotation shaft 33d. It is concluded.

  The first hinge 33b and the pair of second hinges 33c rotate about the axis of the vertical rotation shaft 33e (see the extension line L2 of the vertical rotation shaft core) via the vertical rotation shaft 33e. It is concluded to be movable. In addition, parts such as a spring washer and a plate washer (not shown) are incorporated in each rotation shaft, and have resistance against turning force equal to or less than a set torque, and the user's desired direction in the rotation direction. It is possible to maintain the position.

  When the projector is installed or when the projection direction is changed, the projection direction is determined by adjusting the form of the biaxial hinge 33 corresponding to the position of the screen arranged in advance.

  Although the applicant knows the facts related to the above prior art, these prior arts are not related to literature known inventions and are not known as prior art literature information.

  However, project from the first screen that projects the projection direction of the projector in the horizontal direction to the second screen that is located directly below the projector 2 or a third screen that is set separately in the vertical direction. When changing the projection direction, since the projector 2 is fixed to the structure of the upper space such as the ceiling or beam, it is necessary to go up to a stepladder, chair, etc., preparing tools and changing the projection direction It took a long time to operate.

  Therefore, the present invention has been made in view of the above-described problem, and the projector is fixed to a structure in an upper space such as a ceiling via a fixture, while the user is standing on the floor surface. An object of the present invention is to provide a projector direction adjusting tool capable of arbitrarily adjusting the projection direction and angle of the projector.

  In order to achieve the above goal, the present invention can selectively project both the first screen with the projection plane arranged in the vertical direction and the second screen with the projection plane arranged in the horizontal direction. A projector direction adjuster fixed to the upper structure above the space where the user is located, the projector direction adjuster being connected to the projector with respect to the projection direction of the projector. A first gripper extending from the projector, and a second gripper extending from the projector in the second screen direction in a state where the first gripper extends in the direction of the first screen. It is characterized by.

  Further, from the distal end portion to the middle abdominal portion of the first gripping portion or the second gripping portion of the present invention, the third gripping portion with respect to the direction of the second gripping portion or the first gripping portion. The portion is stretched.

  Further, the third gripping part of the present invention is connected to the first gripping part and the second gripping part.

  The third gripping portion of the present invention is characterized in that it is arranged on an arc that swells away from the projector so that the shortest distance from the floor of the space is constant.

  Further, the fixture of the present invention is further capable of rotating the projector in a horizontal direction, and the first gripping portion is connected to the second gripping portion from the distal end portion or the middle portion of the first gripping portion. A fourth gripping part extending in a direction perpendicular to an extension line of the horizontal rotation axis of the projector and extending in a direction approaching the extension line while being extended toward the screen side; Features.

  Further, the fixture of the present invention can further turn the projector in the horizontal direction, so that the projector can selectively project onto a third screen whose projection plane is arranged in the vertical direction. An extension line of the horizontal rotation axis of the projector in a state where the second gripping portion extends toward the second screen side from the distal end portion to the middle abdominal portion of the second gripping portion. And a fifth grip portion extending in a direction perpendicular to the extension line and in a direction approaching the extension line.

  Further, the first gripping portion, the second gripping portion, the third gripping portion, the fourth gripping portion, and / or the fifth gripping portion of the present invention interfere with the projection range of the projector. It is characterized by being arranged at a position not to be.

  According to the present invention, when changing the projection direction of the projector fixed to the upper structure above the space where the user is located, it is possible to hold the direction adjustment tool from the floor without using a tool such as a stepladder or a chair. It can be easily changed by manipulating the part, saving work time and labor.

  According to the present invention, when the projection direction of the projector is changed between the first screen and the second screen by forming the third gripping portion into an arc shape that swells away from the projector, the user can The gripping portion of the third gripping portion to be gripped can always be the same distance from the floor surface, so that the gripping of the third gripping portion is easy and the user also feels uncomfortable during the operation. I will not let you.

  According to the present invention, since the projection direction can be easily changed with respect to the screens installed in all wall directions around the room where the projector is installed, and also the direction directly below the projector, The screen can be selected as appropriate according to the number of people and the projector can be used effectively.

  According to the present invention, it is possible to easily change the projection direction from a screen installed in a vertical direction to a screen installed in a horizontal direction directly under the projector, for example, a table. It is possible to effectively use the projector such as placing an actual object or the like and performing a comparative study with the video.

1 is a perspective view showing a state in which a projector direction adjusting tool according to a first embodiment of the present invention is attached to a projector. FIG. 2 is a perspective view of a state in which the projector according to FIG. 1 is oriented in the vertical direction. FIG. 2 is an exploded perspective view of the projector, projector direction adjuster, and the like according to FIG. 1. It is a schematic explanatory drawing which shows the usage method of the projector which concerns on FIG. It is the figure which orient | assigned the projector which concerns on FIG. 4 to the perpendicular direction. It is a schematic explanatory drawing which shows the other usage method of the projector which concerns on FIG. It is a perspective view which shows the state which attached the direction adjustment tool for projectors concerning the 2nd Embodiment of this invention to the projector. FIG. 8 is a perspective view of a state in which the projector according to FIG. 7 is oriented in the vertical direction. It is a disassembled perspective view which shows the conventional projector and its suspending device.

[Director for Projector according to First Embodiment of the Present Invention]
Hereinafter, a projector direction adjuster according to a first embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. FIG. 1 is a perspective view showing a state in which a projector direction adjuster according to a first embodiment of the present invention is attached to a projector. FIG. 2 is a perspective view of a state in which the projector according to FIG. 1 is oriented in the vertical direction. FIG. 3 is an exploded perspective view of the projector, the projector direction adjuster, and the like according to FIG. FIG. 4 is a schematic explanatory view showing how to use the projector according to FIG. FIG. 5 is a diagram in which the projector according to FIG. 4 is oriented in the vertical direction. FIG. 6 is a schematic explanatory view showing another method of using the projector according to FIG. Note that components having the same functions and configurations as those described in the background art are denoted by the same reference numerals, and detailed description thereof is omitted.

[Configuration of Direction Adjuster for Projector According to First Embodiment of the Present Invention]
The configuration of the projector direction adjuster 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. As shown in the figure, the projector direction adjuster 1 is a flat rectangular base 5 fixed to the fixture 3, and the projection direction of the projector 2 (front side of the lens 2a) fixed to the side of the base 5 In a state where the first gripping portion 6 extended to the right and the fixing portion of the first gripping portion 6 and the base body portion 5 are inclined by 90 degrees with respect to the projection direction of the projector 2 and projected in the horizontal direction of FIG. And a second gripping portion 7 extending in the vertical direction, and a third gripping portion 8 that connects the tip end portion 6a of the first gripping portion 6 and the tip end portion 7a of the second gripping portion 7. Has been.

  The base portion 5 is composed of a flat plate-like sheet metal structure that satisfies a required strength, and the first gripping portion 6, the second gripping portion 7, and the third gripping portion 8 are solid and / or hollow rods. Consists of the body. Further, the first gripping portion 6, the second gripping portion 7, and the third gripping portion 8 are arranged at positions that do not interfere with the projection range of the projector.

As shown in FIG. 2, the fixture 3 composed of the fixed plate 30 and the biaxial hinge 33 has the same configuration as the conventional suspension device 60, and the description thereof is omitted. The tip of the first gripping portion 6 on an arc centered on the axis of the vertical rotation shaft 33e of the biaxial hinge 33 constituting the fixture 3 (see the extension line L2 of the vertical rotation shaft core). By arranging the tip of the second gripping portion 7 and the entire third gripping portion 8, the locus of the third gripping portion 8 when the projector direction adjuster 1 is rotated in the vertical direction is on the same arc. The adjustment operation is always possible at the same height position from the floor, so that the user can easily grasp the third grasping portion 8, and the user feels uncomfortable with the adjustment operation of the projector direction adjuster 1. It can be done without learning.

  The lengths of the first gripping part 6 and the second gripping part 7 and the shape of the third gripping part 8 are not limited to the above description, and the first gripping part 6 and the second gripping part If the length of the portion 7 is sufficient and the projection direction of the projector can be sufficiently changed for the user with only these two grip portions (6, 7), a configuration without the third grip portion 8 is also possible. Is possible.

  Further, the lengths of the first gripping portion 6 and the second gripping portion 7 of the projector direction adjusting tool 1 are appropriately set according to the height of the mounting surface of the structure in the upper space such as the ceiling or the beam. Thus, even when the projector is fixed in the room, it is possible to secure a position where the hand can be extended and the projector direction adjustment operation can be performed without actually interfering with the user's head.

  Further, the third grip 8 need not be connected to the tip 6a of the first grip 6 and the tip 7a of the second grip 7, and if the user can grip without problems, Of course, the middle part 6b of the first gripping part 6 and / or the middle part 7b of the second gripping part 7 may be connected.

  The third gripping part 8 may be connected to both the first gripping part 6 and the second gripping part 7, or may be connected to only one of them, and further connected to both. However, it is possible to have a configuration in which a part of the third gripping portion 8 is missing and the third gripping portion 8 is not continuous between the first gripping portion 6 and the second gripping portion 7.

[Method of Using Direction Adjuster for Projector according to First Embodiment of Present Invention]
A method of using the projector direction adjuster according to the first embodiment of the present invention will be described with reference to FIGS.

  First, as shown in FIG. 3, the projector 2 is fastened and fixed to the projector direction adjuster 1 with screws 44.

  The fixture 3 assembled in advance and the projector direction adjuster 1 to which the projector 2 is fixed are fastened and fixed by screws 43.

  The screw hole 41a1 of the fixture 3 is aligned with a screw hole (not shown) provided in advance in a structure (upper structure) in the upper space such as the ceiling 27 (FIG. 4), and is fastened and fixed by the screw 41. Do. Thereby, the installation of the projector direction adjuster 1 is completed.

  Next, as shown in FIG. 4, the user 26 uses the second gripping unit 7 and the third screen 21 with respect to the first screen 21 provided in a vertical plane such as a wall surface. The holding part 8 is held, the projection direction of the projector direction adjusting tool 1 is adjusted, and the image of the projector 2 is placed on the first screen 21.

  Similarly, when the projection direction is changed to a third screen 23 separately provided in the vertical plane such as a wall surface different from the wall surface of the first screen 21, the second gripping unit 7, 3, the projector direction adjuster 1 is rotated in the horizontal direction to adjust the projection direction, and the image of the projector 2 is placed on the third screen 23.

  In addition, a procedure for changing the projection direction with respect to the second screen 22 provided in a horizontal plane such as on the table 22 immediately below the projector 2 will be described below with reference to FIG.

  First, in a state where the projection direction is set on the first screen 21 provided in the vertical plane, the user 26 holds the third holding unit 8 and moves the projector direction adjuster 1 while appropriately shifting the holding position. The projection direction of the projector 2 is turned from the horizontal direction to the vertical direction so that the projection direction of the projector 2 is directed to the second screen 22 provided in the horizontal plane. Is held so that the image of the projector 2 is on the second screen 22.

  Therefore, as shown in FIG. 5, when the user 26 operates the grip portion of the projector direction adjuster 1, the projection direction of the projector is set to all directions except the ceiling direction while standing on the floor surface 28. And can be easily changed in the floor direction.

  In addition, the screen position can be freely selected according to the projection content, the number of viewers, etc., and if necessary, a comparative study with the image is performed with a drawing or the actual object next to the projection part on the table. Thus, the projector can be effectively used.

  FIG. 6 shows another usage method, and shows an example of a small room composed of a housing 29 that is simply partitioned into a large room such as a building. The projection state with respect to the 1st screen 21 provided in the vertical surface of the projector direction adjustment tool 1 fixed to the fixture 63 corresponding to the beam 29a as an upper structure is represented.

  The projection direction changing operation for the third screen 23 provided in the other vertical plane and the second screen (not shown) provided in the horizontal plane is the same as described above. Even when the screen 20 exists in various directions, the projection direction of the projector 2 can be changed very easily.

[Director for Projector according to Second Embodiment of the Present Invention]
The configuration of the projector direction adjuster 1 according to the second embodiment of the present invention will be described with reference to FIGS. 7 and 8. FIG. 7 is a perspective view showing a state in which the projector direction adjuster according to the second embodiment of the present invention is attached to the projector. FIG. 8 is a perspective view of a state in which the projector according to FIG. 7 is oriented in the vertical direction. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIGS. 7 and 8, the second embodiment of the present invention is different from the first embodiment only in that a further grip portion is provided.

  That is, as shown in FIG. 8, the horizontal axis of rotation of the projector 1 in the horizontal direction from the distal end portion 6 a of the first gripping portion 6 with the first gripping portion 6 extending to the second screen side 22 side. A fourth grip 11 extending in a direction perpendicular to the extension line L1 and in a direction approaching the extension line.

  Further, as shown in FIG. 7, the horizontal rotation axis of the projector is extended from the distal end portion 7 a of the second gripping portion 7 in a state where the second gripping portion 7 extends toward the second screen 22. A fifth grip portion 12 is provided that extends in a direction perpendicular to the line L1 and in a direction approaching the extension line.

  Further, the side surface of the base unit 5 is fixed to the opposite side surface via the first gripping unit 6 and the projector 2, and extends in the projection direction of the projector in parallel with the first gripping unit 6. 11 and the 6th holding part 13 connected with the tip. Furthermore, a seventh portion extending in the vertical direction in parallel with the second gripping portion 7 from the fixed portion of the sixth gripping portion 13 and the base portion 5 and connected to the fifth gripping portion 12 at the tip. The grip part 14 is provided.

  As a result, as shown in FIG. 7, when the projection surface of the projector 2 is set to a screen arranged on a vertical surface (when the projection direction is the horizontal direction), the fifth grasping portion 12 is grasped. Thus, the projector 2 can be rotated in the horizontal direction, and the fifth gripping portion 12 is in a direction perpendicular to the extension line L1 of the horizontal axis of rotation of the projector 2, and Since it extends in the direction approaching the extension line, the user can rotate the projector 2 in the horizontal direction with less force.

  In addition, as shown in FIG. 8, when the projection surface of the projector 2 is set to a screen arranged on a horizontal plane (when the projection direction is a vertical direction), the fourth holding unit 11 is held, The projector 2 can be rotated in the horizontal direction, and the fourth grip 11 is in a direction perpendicular to the extension line L1 of the horizontal axis of rotation of the projector 2 and the extension. Since it extends in the direction approaching the line, the user can rotate the projector 2 in the horizontal direction with less force.

  Further, the presence of the sixth gripping portion 13 and the seventh gripping portion 14 provides the user with a wide range of options for the gripping portion, and can realize its flexible operability. It is possible to improve the strength of 50.

  Further, the fourth grip portion 11 and / or the fifth grip portion 12 need not be connected to the tip portion 6a of the first grip portion 6 and the tip portion 7a of the second grip portion 7. If it can be gripped without any problem, it is natural that it may be connected to the middle part 6b of the first gripping part 6 and / or the middle part 7b of the second gripping part 7.

  Further, the fourth gripper 11, the fifth gripper 12, the sixth gripper 13, and the seventh gripper 14 are arranged at positions that do not interfere with the projection range of the projector.

  The method of using the projector direction adjusting tool according to the second embodiment of the present invention is the same as the method of using the projector according to the first embodiment, as shown in FIGS. 4 to 6. As described above, the projection of the projector 2 is performed. When the screen is set to a screen arranged on a vertical plane, the fifth holding unit 12 is used. When the projection surface of the projector is set to a screen arranged on a horizontal plane, the fourth holding unit is used. By gripping the part 11, the horizontal rotation of the projector can be performed more easily.

  The present invention can be embodied in many forms without departing from its essential characteristics. Therefore, it is needless to say that the above-described embodiment is exclusively for description and does not limit the present invention.

1 Projector direction adjuster (first embodiment of the present invention)
2 Projector 2a Lens 3 Attachment 5 Base part 6 First gripping part 6a Tip part 6b Middle abdomen 7 Second grip part 7a Tip part 7b Middle part 8 Third grip part 11 Fourth grip part 12 5th Grip part 13 Sixth grip part 14 Seventh grip part 20 Screen (21, 22, 23)
21 First screen 22 Second screen 23 Third screen 26 User 27 Superstructure (ceiling)
28 Floor 28a Table 29 Housing 29a Superstructure (beam)
30 fixing plate 33 biaxial hinge 33a mounting plate 33b first hinge 33c second hinge 33d horizontal direction rotating shaft 33e vertical direction rotating shafts 41, 42, 43, 44 screw 41a1 screw hole 50 direction adjuster for projector (present invention) Second Embodiment)
60 Hanging device 63 Attachment 61 Base part L1 Horizontal rotation axis extension line L2 Vertical rotation axis extension line

Claims (7)

The user can selectively project on both the first screen with the projection plane arranged in the vertical direction and the second screen with the projection plane arranged in the horizontal direction. A directional adjustment tool for a projector fixed to the upper structure above the space where
The projector direction adjuster includes: a first gripper extending from the projector with respect to a projection direction of the projector; and the projector in a state where the first gripper extends in the direction of the first screen. A projector direction adjuster, comprising: a second grip portion extending in the second screen direction.   The third gripping portion extends from the distal end portion or middle portion of the first gripping portion or the second gripping portion in the direction of the second gripping portion or the first gripping portion. The projector direction adjuster according to claim 1, wherein:   The projector according to claim 2, wherein the third gripping part is connected to the first gripping part and the second gripping part.   4. The point according to claim 2, wherein the third grip portion is arranged on an arc that swells away from the projector so that the shortest distance from the floor of the space is constant. The projector direction adjuster as described. The fixture can further rotate the projector in a horizontal direction,
From the front end portion to the middle portion of the first gripping portion, the first gripping portion extends toward the second screen, and extends with respect to the extension line of the horizontal rotation axis of the projector. The projector direction adjusting tool according to any one of claims 1 to 4, further comprising a fourth grip portion extending in a vertical direction and in a direction approaching the extension line. . The fixture is further capable of rotating the projector in a horizontal direction, whereby the projector can selectively project onto a third screen having a projection surface arranged in a vertical direction,
From the distal end portion to the middle portion of the second gripping portion, the second gripping portion extends toward the second screen, and extends with respect to the extension line of the horizontal rotation axis of the projector. The projector direction adjusting tool according to any one of claims 1 to 5, further comprising a fifth grip portion extending in a vertical direction and in a direction approaching the extension line. .   The first gripper, the second gripper, the third gripper, the fourth gripper, and / or the fifth gripper are arranged at positions that do not interfere with the projection range of the projector. The projector direction adjuster according to any one of claims 1 to 6, wherein:

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